The head of a Pembroke school where several students were taken ill last week after reacting to a type of legal high, has reassured parents that it was an isolated incident. Mr. Frank Ciccotti, head of Pembroke Comprehensive School, said this week that the school had quickly settled back to normal following what he called a "disturbing incident". "We are in discussion with the local authority about providing support and guidance for the pupils who were involved," said Mr. Ciccotti. "Although many students and staff in the school are annoyed at the damage to the school's reputation caused by their irresponsible action, we are also relieved that all have fully recovered," he continued. Dyfed-Powys Police have conducted further enquiries at the school, where shortly after 2 pm on Wednesday, May 14, the ambulance service informed police of an incident they were dealing with at the school, where a group of pupils had become unwell, following what is believed to have been a reaction to a new psychoactive substance. Although the majority were taken to Withybush hospital in Haverfordwest as a precaution, no pupils were admitted and soon returned to their parents. Officers visited the school again the following day to provide advice, support and reassurance, and conduct further enquiries. "Substance misuse and the associated dangers is addressed in the All Wales Schools Liaison Core Programme, and the subject is updated regularly in light of new emerging substances," said a police spokesperson. "New psychoactive substances (so-called legal highs) frequently contain substances that are not legal and cannot be assumed safe. "These substances have not been properly tested to see how toxic they are to humans, so there is no way of telling how a psychoactive drug will affect you. Information on substance misuse for parents and pupils can be found at http://www.schoolbeat.org,&quot">www.schoolbeat.org," they added. Mr. Ciccotti explained that it was a Year 10 pupil that had brought the 'legal high' into school to share with a group of friends at lunchtime. "He bought this the previous evening in the local area, not on the school site. This group of 10 friends went to a secluded woodland area, a long way away from the school building, and shared the drug," continued Mr. Ciccotti. "Unfortunately, one student had a very severe reaction to it. This was reported to us by responsible students. He was so unwell that we called for an ambulance and they in turn called the air ambulance as a precautionary measure, although ultimately it was not used to take him to hospital. "Together with all the pupils who had taken the drug, he was checked in hospital and released later that evening. All are now well. "All the pupils involved in this incident have received fixed term exclusions. This is our standard practice for the very few incidents involving drugs or alcohol on the school site. It is our way of sending a strong message that Pembroke School does not tolerate drugs and alcohol," he added.